Indexers in C#

In this article, we will find out about the indexers in C#, how to actualize indexer in C#?

An Indexer is an exceptional element of C# to utilize an article as a cluster. In the event that you characterize an indexer in a class, at that point it will carry on like a virtual cluster. The indexer is otherwise called shrewd cluster in C#. It’s anything but a mandatory or basic piece of OOPS.

It is otherwise called listed property. It is a class property that permits to get to information individuals utilizing an element of the exhibit.

We utilize this item to execute indexer in class.

Syntax:

<Modifier> <return type> this[parameter list]
{
	get
	{
		//write code here
	}

	set
	{
		//write code here
	}
}

Example

using System;
using System.Collections;
namespace ConsoleApplication1
{
    
    class Names
    {
        static public int len=10;
        private string []names = new string[len]    ;


        public Names()
        {
            for (int loop = 0; loop < len; loop++)
                names[loop] = "N/A";
        }
        public string this[int ind]
        {
            get
            {
                string str;
                if (ind >= 0 && ind <= len - 1)
                    str = names[ind];
                else
                    str = "...";
                return str;
            }

            set
            {
                if (ind >= 0 && ind <= len - 1)
                    names[ind]=value;
            }
        }
    }

    class Program
    {
        static void Main()
        {
            Names names = new Names();

            names[0] = "Durgesh";
            names[1] = "Kishan";
            names[2] = "Aakash";
            names[3] = "Vivek";
            names[4] = "Vibhav";

            for (int loop = 0; loop < Names.len; loop++)
            {
                Console.WriteLine(names[loop]);
            }

        }
    }
}

Output

    Durgesh
    Kishan
    Aakash
    Vivek
    Vibhav
    N/A
    N/A
    N/A
    N/A
    N/A

The significant point with respect to indexers:

• We utilize this catchphrase to actualize indexer.
• The indexer can be over-burden.
• Indexer can’t be static.